A set of experiments was designed to study the power performance of a c-Si and a pc-Si cell when exposed to various levels of high illumination. The light concentration ratio, C, ranges from C 〈 1, up to C ≈ 26. An ...A set of experiments was designed to study the power performance of a c-Si and a pc-Si cell when exposed to various levels of high illumination. The light concentration ratio, C, ranges from C 〈 1, up to C ≈ 26. An experimental set up was built for the purposes of this project. PV cell modeling is outlined in this paper for isc, Voc and the PV cell temperature, Tc, which predicts those quantities. There the behaviour of the two PV-cells at both transient out steady state conditions is studied. Predicted values are compared against measured ones. A comparison of the experimental values against the theoretically predicted ones is performed for the range C 〈 1 to C ≈ 26. Power recovery is tried through heat removal from both sides of the PV-cells by air forced flow. Experiments show recovery whose degree is close to 100% for low C values. On the other hand, as C grows higher, P~ starts decreasing too. PV cell temperatures reached up to 136 ℃ for C = 25. This is a challenge as reduction of temperature delivers a good amount of heat, in the cogeneration effect, while it has a positive impact to power recovery of the PV cell.展开更多
日前．上海交通大学生命学院神经工程实验室激光散斑成像研究组博士生苗鹏的研究论文“Random process estimator for laser speckle imaging of cerebral blood flow”被光学领域的顶级杂志《光学快讯》（Optics Express）接受发表。
The present paper deals with both the steady-state and dynamic simulation of a plate heat exchanger, in counter-flow arrangement. A CFD （computational fluid dynamics） program FLUENT has been used to predict the temp...The present paper deals with both the steady-state and dynamic simulation of a plate heat exchanger, in counter-flow arrangement. A CFD （computational fluid dynamics） program FLUENT has been used to predict the temperature distribution in steady-state conditions in plate heat exchanger as well as fluid temperatures at exit of flow channels in transient condition. The results are presented for the heat exchanger, which is simulated according to the configuration of the plate heat exchanger used in the experiment. The simulated results obtained by the CFD model have been compared with the experimental data from the literature, which shows that the CFD model developed in this study is capable of predicting the steady-state and transient performance of the plate heat exchangers satisfactorily.展开更多
文摘A set of experiments was designed to study the power performance of a c-Si and a pc-Si cell when exposed to various levels of high illumination. The light concentration ratio, C, ranges from C 〈 1, up to C ≈ 26. An experimental set up was built for the purposes of this project. PV cell modeling is outlined in this paper for isc, Voc and the PV cell temperature, Tc, which predicts those quantities. There the behaviour of the two PV-cells at both transient out steady state conditions is studied. Predicted values are compared against measured ones. A comparison of the experimental values against the theoretically predicted ones is performed for the range C 〈 1 to C ≈ 26. Power recovery is tried through heat removal from both sides of the PV-cells by air forced flow. Experiments show recovery whose degree is close to 100% for low C values. On the other hand, as C grows higher, P~ starts decreasing too. PV cell temperatures reached up to 136 ℃ for C = 25. This is a challenge as reduction of temperature delivers a good amount of heat, in the cogeneration effect, while it has a positive impact to power recovery of the PV cell.
文摘日前．上海交通大学生命学院神经工程实验室激光散斑成像研究组博士生苗鹏的研究论文“Random process estimator for laser speckle imaging of cerebral blood flow”被光学领域的顶级杂志《光学快讯》（Optics Express）接受发表。
文摘The present paper deals with both the steady-state and dynamic simulation of a plate heat exchanger, in counter-flow arrangement. A CFD （computational fluid dynamics） program FLUENT has been used to predict the temperature distribution in steady-state conditions in plate heat exchanger as well as fluid temperatures at exit of flow channels in transient condition. The results are presented for the heat exchanger, which is simulated according to the configuration of the plate heat exchanger used in the experiment. The simulated results obtained by the CFD model have been compared with the experimental data from the literature, which shows that the CFD model developed in this study is capable of predicting the steady-state and transient performance of the plate heat exchangers satisfactorily.
